Journal
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
Volume 175, Issue 1, Pages 354-359Publisher
SPRINGER
DOI: 10.1007/s12010-014-1275-6
Keywords
Chlorella pyrenoidosa; Rhodotorula mucilaginosa; Mixed culture; Lipids; Biodiesel; Synergistic effect
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Given the well-known environmental drawbacks of using fossil fuels, advances in the field of alternative energy have become a worldwide technological priority. Special interest has been focused on the production of biodiesel obtained from oleaginous microorganisms. In the present research, lipid production by two species, microalgae Chlorella pyrenoidosa and yeast Rhodotorula mucilaginosa was assessed, independently and in mixed culture to evaluate a possible synergy. Fatty acid analysis was performed by gas chromatography. Among pure and mixed cultures of both strains and several culturing conditions, the highest biomass and lipid productivity was obtained by C. pyrenoidosa (8.05 and 1.62 g/L, respectively). The results of this study showed that both strains used are in fact oleaginous strains as they were found to reach up to 20 % of lipids, in addition, lipids in both pure and mixed cultures were mainly of triglycerides (> 90 %), composed of fatty acid chains between 16 and 18 carbons.
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